Lock mechanism for breech-loading guns.



A. T. DAWSON & G. T. BUUKHAM.

LOOK MECHANISM OF BREEOH LOADING GUNS.

APPLICATION FILED JUNE 29, 1914. 1 1 16,027.

Patented Nov. 3, 1914.

- To all whom it may concern:

UNITED; STATES PATENT OFFICE.

ARTHUR TREVOR DAWSON AN D GEORGE THOMAS BUCKHAM, OF WESTMINSTER, LONDON, ENGLAND, ASSIGNORS TO VICJHIRS LIMITED, OF WESTMINSTER,

ENGLAND.

Specification of Letters Patent.

Patented Nov. 3, 1914 Original application filed January 26, 1914, Serial No. 814,540. Divided and this application filed June 29,

' 1914. Serial No. 847,857.

An'rrmn wTREvoR Beit known that We, I

and GEORGE THOMAS DAWSON, knight,

BUCKHAM, both subjects of the King of- Great Britain, residing at Vickers House, Broadway, Westminster, in the county of London, England, have invented certain new and useful Improvements in or Relating to the Lock Mechanism of Breech- Loading Guns, of which the following is a specification.

This invention relates to lock mechanism of the kind having a re-priming device that comprises a primer magazine and a bolt which is carried by the laterally moving lock frame and is used for introducing a new primer from .the magazine into th primer chamber of the vent axial.

According to this invention the primer magazine is in the form of a hopper carried by the lock frame and the primers therein are under the control of a device (such as a bar having an inclined upper surface) that does not move laterally with the lock frame and the hopper.

In order that the said invention may be clearly understood and readily carried into effect, we will describe the same more fully with reference to the accompanying drawings, in which Figures. 1, 2 and 3 are transverse sections through thehoppers showing a constructional form of our invention, Fig. 1 showing the position of the primers immediately prior to the insertion of the lowermost one into the primer chamber and Fig. 2 after this primer has been inserted, while Fig. 3 shows the position of the parts when the magazine is empty.

A represents the hopper, B the bolt, C the device for'controlling the movements of the primers, and D the lock frame carrying the hopper, the bolt and the said device.

This invention is intended to be applied to the form of lock mechanism described in the specification of the prior U. S. Patent, No. 1,095,558. r

In the construction illustrated the aforesaid device C is in the form of a horizontal bar or plate having an inclined upper surface which, when the lock frame is closed (Fig. 1) lies beneath the lowermost of the prlmers in the hopper. When the lock frame is moved laterally in opening, the hopper moves .clear of the said bar or plate and a primer is permitted to escape from the hopper and come to rest upon the bolt sleeve. When the lock frame is closed, the inclined surface of the bar or plate co6perates with the primer immediately above the one resting upon the bolt sleeve so that when the bolt is retracted by the cooking handle to permit the last mentioned primer to fall in front of the .bolt head, for insertion into the primer chamber, the primer that is now lowermost in the hopperwill be prevented from escaping (Fig. 2). The.

bar or plate is preferably attached to the box slide. A hinged plate or leaf A may be provided for indicating when the hopper is empty.

What we claim and desire to secure by I withdraw from the magazine upon opening and closing movements of the lock frame to control the feeding of the primers from the magazine. I

2. In lock mechanism for ordnance, the combination with the box slide, a laterally movable lock frame and the primer magazine carried thereby, of a bar'attached rigidly to the box slide and adapted to enter and withdraw from the magazine upon opening and closing movements of the lock frame to control the feeding of the primers from the magazine.

3. In lock mechanism for ordnance, the combination with a laterally movable lock .frame, of a vertically disposed primer magazine carried thereby from which the primers are fed by gravity, and a station-.

ary member adapted in one position of the magazine to support a series of primers in the magazine against the action of gravity, said member being operative upon In testimony whereof vie aifixiour signatlateral movements of the magazine to withtures in resenoe'of two Witnesses.

draw from such su ortin si n to H B T EV R WSON. mit the lowermost gop elhivgfi 5.6 It E TEOLPAS 5 member and to return to its supporting Witnesses: r

position to support the remamjng primers HENRI: G I w n in the magazine.- Jim v t 

